Gyrating sieve or bolting-machine



4 Sheets ,Sheet 1.

(No Model.)

A. WOLF. GYRATING SIEVE OR BOLTING MJ'LCIEIITVL.A

Patented Deo.- 21,- 1897.

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(No Model.) 4 Sheets-Sheet 2.

A. WOLF.

GYRATING SIEVE OB, BOLTING MACHINE. 510.595,985. Patented D55., 21,v189,7.

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(No Model.) 4 Sheets--Sheet 3..

l A. WOLF. GYRATING SIEVE 0R BOLTING. MAGHINB. No. 595,985. PatentedDec. 21.1897.

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4 Sheets Sheet 4. A. WOLF. GYRATING SIEVE 0R BOLTING MACHINE. Y

Patented Deo. 21, 1897.

(No Model.)

lNITED STATES PATENT FFICE.

AUGUSTUS WOLF, OF OHAMBERSBURG, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 595,985, dated December21, 1897. Application filed November 2l, 1895. Serial No. 569,712. (Nomodel.)

.To @ZZ whom t may concer-n:

Be it known that I, AUGUSTUS WOLF, a citizen of the United States, and aresident of Chambersburg, Pennsylvania, have invented certainImprovements in Gyrating Sieves or Bolting-Machines, of which thefollowing is a specification.

One object of my invention is to provide means for supporting from belowthe sievecasing of a gyrating sieve and bolting-machine in such mannerthat the said casing can have free horizontal movement in alldirections, a further object being to provide for ready access to any ofthe sieves without dis*- turbing the others, and a still further objectbeing to reduce the size of the machine. These objects I attain in themanner hereinafter set forth, reference being had to the accompanyingdrawings, in which- Figure lis a side View, partly in section, of agyrating sieve and bolting-machine constructed in accordance with myinvention. Fig. 2 is an end view of the same. Fig. 3 is asectional planview of part of the machine on the line 3 3, Fig. l; and Fig. 4 is atransverse sectional view of the sieve-casing of the machine, taken onthe line y y, Fig. l.

A represents the sieve-casing of that form of bolting apparatus in whichthe sieve-casing or bolting-chest has a gyrating movement, this casingbeing mounted upon four rods B, located two upon each side of the casingat points substantially equidistant from the center of the same. Thelower ends of these rods B rest in sockets ct, secured to a suitablebedplate D upon the iioor of the room or apartment containing'themachine, the upper end of each rod being socketed for the reception ofthe lower end of a set-screw b, which is carried` by a projecting lug bon a plate b2, secured to the bottom of the casing A, the

character of the sockets a in respect to the lower ends of the rods Band the character of the sockets in said rods in respect to thesetscrews b being such that free tipping or tilting movement of saidrods in the sockets a and like free tipping or tilting movement of theset-screws b in the sockets of therods B are permitted. A sieve-casingsupported in this way can be operated with a minimum amount of power andwithout causing that vibration of the building which is an objection togyrating sieve-casings supported from above in the usual way.

Projecting from each side of the casing A is a bracket-plate c, withdepending lugs c', which carry set-screws c2, upon which is pivotallymounted a ring d, having set-screws d in a plane at.. right angles tothat of the setscrews c2, and upon said set-screws d is pivotallymounted a bearing box or block cl2,

which receives a crank-pin j', rigidly secured -to and projectingupwardly from a disk F, the

box cl2 being preferably split and provided with a tightening-bolt, asshown by dotted lines in Fig. 3, so that it can at all times be causedto fit snugly to the crank-pin f.

The opposite disks F are carried by vertical shafts G and are connectedby a belt g, so as to be caused to rotate in unison, power being appliedto each of the upright shafts G from a transverse shaft H through themedium of bevel-wheels h h', as shown in Fig. 2. This positive drivingof each shaft in connection with the belting of the disks F togetherinsures the rotation of said disks at the desired uniform speed andwithout any backlash,which might occur if the bevel-gears only wereemployed.l As the disks are rotated, therefore, the casingA is caused tomove in a horizontal plane and in a circular path corresponding withthat of the crank-pins f, the rods B providing the necessary verticalsupport for the casing and the crank-pins governing the longitudinal andlateral movements of said casing, whereas if only a single drivingconnection were used, as heretofore, the gyratin g movement of thecasing A would be unsteady, thereby necessitating the use of additionalsupporting means from above the machine in order to properly balance themovements, which means are entirely dispensed within my construction,where the parts in motion are properly controlled by the double drivingmeans in such manner as to secure a uniformly regular speed in a horilzontal plane without any unsteadiness of motion.

The universally flexible mounting provided for the crank-pin boxes d2prevents any bindingof the crank-pins in said boxes or heating of eitherof the parts due to such binding which might be caused by settling ofany part of the supporting or drivingstructure and lack of properalinement due thereto.

The sieve structure comprises the sieves t', t', i2, i3, and t, thethree upper sieves and the bottom sieve being inclined outwardly anddownwardly from the center of the machine and the intermediate sievebeing inclined inwardly and downwardly toward the center of the machine.The material from the central `hopper 7a is therefore delivered onto thehead of each of the top sieves 1'., and those portions passing througheach sieve i are received by the second sieve i', part of such materialfalling directly upon the sieve t" and part of it being directed ontothe same by a directingboard m, located beneath the tail end of thesieve t, extending part way under the same and inclined-in a directionthe reverse of the sieve. In the same way the material from the sieve t"is directed onto the sieve i2. and that from the sieve 712 is directedonto a collectin g-table n, which guides it to the outletopenings p p",located centrally in the sievecasing, there being a set of sieves oneach side of the same, as shown in Fig. The tailings from the sieves 'L't' are delivered into a chamber s at the end of the machine; but thosefrom the sieve t2 are delivered onto the sieve i3, the material passingthrough the latter being caught by a collecting-table n/,which likewiseguides it to the openings pp'. The tailings from the sieve t3 aredirected onto the bottoni sieve i, and the material which passes throughthe latter is received by the inclined bottom n2 of the casing anddirected to the outlet n3, the tailings from the sieve t4 escaping intothe chamber s, from which they are discharged through the opening s.

The openings p p may be provided with suitable valves, so that eithercan be cut off and the other used as the discharge.

By using the short directing-boards m the size of the machine is muchreduced as cornpared with one having directing-boards running the fulllength, owing tothe less vertical space occupied by the said shortboards.

Each of the sieves i', i2, 3, and 4 has end slats adapted to guides insuitable strips within the casing, so that said sieve-frames can beintroduced and withdrawn from the sides of the casing like drawers, andeither of the sieves can thus be readily withdrawn without disturbingthe others. lIence each sieve is readily accessible for cleaning orrepairs, the

Vtop sieve t' being accessible from the top of the machine.

At the lowest portion of each of the collecting-tables n n of themachine is a block or weight w, which is carried by a cord w', extendingto the opposite ends of the table, these Weights or blocks as thesieve-casing is gyrated moving about on the lowest portions of thetables and serving to aid in directing the material from said tables tothe outlets p p.

Having thusl described my invention, I claim and desire to secure byLetters Patentl. The combination of the sieve-casing, thesupporting-rods having socket-bearings on said casing and on thebase-plate, a pair of disks each having a crank-pin, crank-pin boxesuniversally pivoted to the sieve-casing and free to rise and fall on thecrank-pins,

and means for rotating the disks in unison.

2. The combination of the sieve-casing, the supporting-rods havingsocket-bearings on said casing and on the bed-plate, a pair of diskseach having a crank-pin, crank-pin boxes on the sieve-casing, verticalshafts carrying the disks, a transverse driving-shaft, bevel-gearingwhereby the vertical shafts are driven therefrom, and a belt passinground disks or pulleys on the two shafts, whereby said disks arepositively driven and backlash due to loose mesh of the bevel-gears isprevented, substantially as specified.

3. The herein-described improvement in bolting-machines, consisting inthe combination of the gyratory casing provided with vertical interiorpartitions forming stops for the sieves, and a central outlet, thevertical series of endwise-discharging sieves insertible andwithdrawable laterally toward and from said interior partitions throughopenings in the outside opposite exterior walls of the casing, andcollecting-plates arranged between the sieves of each vertical seriesand discharging laterally of the sieves into said central outlet throughopenings in the walls thereof, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence oi' two subscribing witnesses.

AUGUSTUS WOLF.

Vitnesses:

G. R. WUNDERLIci-i, J. A. STRITE.

IOO

